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irina1246 [14]
3 years ago
9

An average adult can hear sounds with frequencies between 20 waves per second and 16,000 waves per second. What is the wavelengt

h, in meters, of a sound wave with a frequency of 20 waves per second?
Mathematics
2 answers:
katrin2010 [14]3 years ago
8 0

Answer:

17 meters, and the next question's answer is 800 meters long.

Step-by-step explanation:

edge

frez [133]3 years ago
6 0

Answer:

The wavelength, of a sound wave with a frequency of 20 waves per second is 15,000,000 m.

Step-by-step explanation:

In this question, we have to calculate the wavelength of a sound wave of frequency 20 waves per second.

We know that  the speed of light in air/ vacuum is 3\times 10^{8}.

Now by the formula v = nλ , where v = speed of light in air/vacuum, n = frequency of the wave and λ = wavelength in meters,

we put the values

3\times 10^{8} = 20 × λ

λ = \frac{3\times 10^{8}}{20}

λ = 15,000,000 m

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1. Green Forest Day Camp has 43 fewer girl campers than boy campers. There are 278 boy campers. Use rounding to estimate the tot
Aleks04 [339]

Answer: 513 campers

Explanation

The total number of boys in the camp is 278

There are 43 fewer girl campers than boy

Let the total number of campers be x

Let the total number of girl campers be y

Since, there are 43 fewer girl campers than boy

Hence, the total number of girl campers is

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y = 278 - 43

y = 235

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The total number of campers = number of boy campers + number of girl campers

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1 year ago
Make t the subject of the formula.<br><br> Please help.
Digiron [165]

Answer:

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Step-by-step explanation:

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Use distributive property: a*(b + c) =(a*b) + (a*c)

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               t = \frac{2-3q}{q+4}

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